Drug Diary: Each day for the first 8 weeks you take IL-2 and each day during extend-duration IL-2 (if applicable), you will be asked to document, in a drug diary, when you took the drug and where you injected it. The diary will also include special instructions for taking the study drug(s). The diary will also ask if the entire syringe was injected, and if there were other issues related to IL-2. You will be asked to return your drug diary to clinic every 14 days while you receive IL-2. If you continue taking IL-2 in the extend-duration portion, you will return your drug diary every 8 weeks (at your clinic visit).